(Alex Jones sits behind Twitter CEO during Senate hearing. Photo By Tom Williams/CQ Roll Call)

Alex Jones and his show Infowars are no longer welcome on Twitter. On Thursday, the company decided to permanently ban the conservative web show host for posting tweets and videos the day before that violated its abusive behaviour policy.

The company didn't cite the offending posts. But Jones live streamed his visit to Capitol Hill yesterday as Twitter's own CEO Jack Dorsey was set to testify before Congress.

At one point, Jones was photographed trying to question Dorsey as he exited the Senate hearing. He was also filmed in a testy exchange with Senator Marco Rubio. "You are literally like a gangster thug," Jones said at one point.

During his visit, Jones also confronted a CNN reporter, calling him a "congenital liar." "You are the definition of a fraud. You are a charlatan," Jones told CNN reporter Oliver Darcy, later adding, "You are incredibly shameful."

"Today, we permanently suspended @realalexjones and @infowars from Twitter and Periscope. We took this action based on new reports of Tweets and videos posted yesterday that violate our abusive behavior policy, in addition to the accounts' past violations," Twitter's safety account said.

A month ago, Facebook and YouTube decided to ban Jones and his controversial show over hate speech. However, Twitter refrained from shutting down his account, claiming at the time that Jones hadn't violated any of the company's rules.

A week later, Twitter decided to suspend Jones's account, but only for seven days. This was in response to a video he posted calling on supporters to get their "battle rifles" ready against the media.

Twitter's abusive behavior policy states: "You may not engage in the targeted harassment of someone, or incite other people to do so. We consider abusive behavior an attempt to harass, intimate, or silence someone else's voice."

In response to the ban, Jones claims he's a victim of censorship. He claims that "Our listeners are at an all-time high" despite the ban, but the New York Times reports that traffic to his sites has dropped after an initial post-ban spike.